Building construction



BUILDING CONSTRUCTION Filed Oct. 13, 1920 m u I gwumto'a UNHTEE? FATENT GFFlfiE.

rnann a. nann, or nnoa'run, rnnrnors.

BUILDING CONSTRUGTIDN.

Application filed October 13, 1920.

To all whom it may concern:

Be it known that l, FRANK li TAHN, a citizen of the United States of America, residing at Decatur, in the county of Macon and State of Illinois, have invented certain new and useful improvements in Building Constructions, of which the following is a specification.

This invention relates to building structures and particularly of the type utilizing cement or other plastic units which are molded or cast and then set or assembled in position to form the completed structure.

The objects of this invention are to provide a. structure which may be readily and quickly built and assembled of precast units which will be suitably reinforced and rigidly locked and secured in position so that the structure when completed is of adequate strength and permanency for the purpose intended.

Another object of the invention is the improvement of the construction of the various individual units which are utilized to form the completed structure.

With these and other objects in view, my invention consists in certain features of structure, combination and relation which will be more fully referred to hereinafter.

T have illustrated What I now consider to be the preferred embodiment of my invention in the following drawings, wherein:

Figure 1 is a plan View of a portion of a flooring construction.

Fig. 2 is an elevation of a portion of two flooring units and a bridging joist.

Fig. 8 is a perspective view of one end of a. binding joist.

Fig. 4: is a perspective view of a portion of a bridging joist.

Fig. 5 is a detail showing one form of connection between two binding joists.

Figure 6 is a perspective view of a portion of a bridging joist showing a modification.

Figure 7 is a top plan view of a portion of the construction utilizing such a bridging joist and showing the connection between the bridging joist and the flooring units.

The construction shown in the drawings (which are to some extent merely diagrammatic) includes binding joist elements 1 which are substantially rectangular in sec- Serial No. 416,725.

tion and which are constructed of any suitable plastic material. These joist elements each have a longitudinally extending and centrally positioned enlargement 2, providing the relatively depressed flat seats 3 on each side thereof, also the shoulders or abutments 1-. The end of each of said joist elements is provided with the cut out portion or recess 5.

A reinforcing member 6, as for example a wire or rod, extends longitudinally through the joist and projects from each end thereof in the form of a loop, as at 7.

In addition to the binding joist elements, I also provide bridging joist elements 8, adapted to serve as supports for floor units or for ceiling units or for both floor and ceiling units. These bridging joists are somewhat similar in form to the binding joists heretofore described, being substantially rectangular in section and each having a longitudinally extending and centrally positioned enlargement 9 providing the relatively flat seats 10 and shoulders or abutments 11 on either side. The ends of these bridging joist members are recessed as at 12 in a manner similar to the recessed ends of the binding joists and reinforcing members 13 extend longitudinally through the joists and project at the recessed ends in loops 14, this much of the construction being the same as that previously described for the binding joists.

As shown particularly in Fig. of the drawings each of these bridging joist members have a plurality of undercut recesses 15 formed in one or both of their side portions, these recesses being adapted to receive the under portions of the ceiling units 15. lln forming these recesses, supporting means for the ceiling units is also provided in the form of the laterally extending flanges 16 and the recesses are separated from each other by means of the vertical strengthening webs 17 which are positioned at intervals along the length of the bridging joist member. In casting, the reinforcing members 18 are incorporated in the joists so as to be within the webs 1?, these reinforcing members, which may be of any suitable metal, being substantially U-shaped and having the laterally extending end flanges 19.

The bridging joists 8 are also adapted to support the floor units 20 which may be cast in any suitable form or size, each being provided with one or more reinforcing members in the form of a wire or rod having a loop 22 at each end thereof. The floor units have their ends recessed as indicated at 23' so as to expose said loops 22. In assembling the units, the end portions thereof rest on A the seats 10 of the bridging joists ,8 and their ends abut shoulders 11 of said joists. I The bridging joists are positioned on the binding joists and held together by means of links or hooks 24 connecting the projecting loops of the reinforcing members of the joists and the floor units are likewise secured to one another by similar links or hooks, as at 25, connecting the adjacent loops of the reinforcement in the floor members.

It is to be understood that the various units or elements are precast in molds or forms and then assembled to form the structure shown. After the connecting or securing means are placed in position, cement or other suitable plastic material is poured thereon soas to permanently bind the parts together. i

A slightly different embodiment of my invention is shown in Figures 6 and 7' wherein the numeral 26 designates the joist which is constructed substantially the same as the joist 1, with the addition of the pins 27- which are provided medially along the same. These pins are adapted to be embraced by the loops 28 formed in the ends of the floor or roof units 29, these loops preferably being the extensions of longitudinal reinforcing members. This form of securing means is adapted not only to the floor but also to a roof construction, sloping as well as straight.

It is therefore seen that units are provided which may be readily assembled in the form of a completed structure, the parts being rigidly connected and securely held together and the individual unitsbeingreinforced and the reinforcements coupled together so that the whole forms a solid and unitary structure. It is also to be noted that the joist members perform various functions in addition to those ordinarily performed by joists, as they not only bear a floor, but provide a supporting means for the units which form the ceiling of the room below.

I claim:

1. A building construction composed of a plurality of precast units, including a plurality of binding or longitudinally extending joist members, and a plurality of bridging or transversely extending joist members supported by said binding joist members,

said binding joist members having longitudinal reenforcements exposed at intervals in the form of loops and said bridging jpist members having longitudinal re-enforcements exposed at intervals in the form of loops, means for securing adjacent loops 'to-- gether, and floor members supported by said bridging joist members.

2. A building construction composed of a plurality of pro-cast units, including binding joist members, bridging joist members supported thereby, said bridging joist members being formed with a longitudinally extending enlargement on the top thereof providing flat seats on each side thereof, said bridg ing joist members also having a plurality of undercut recesses formed in its sides: providing a plurality of laterally extending flanges, floor members supported by said flat seats on top of said bridgingjoists, and ceiling members supported by said laterally extending flanges.

3. A building construction composed of a plurality of pie-cast units, including binding joist members, bridging joist members supported thereby, said bridging joist members being formed with a longitudinally extending enlargement on the top thereof providing flat seats on each side thereof, said bridging joist members also having a plurality of undercut recesses formed in its sides providing a plurality of laterally extending flanges, floor members supported by said fiat seats on top of said bridging joists, and ceil ing members supported by said laterally extending flanges, saidbridging joist members being provided with transversely arranged reenforcing members, the body of which is.

substantially U-shaped, the ends extending laterally to reenforce said lateral flanges.

4. A building structure including bridging oist members, binding oist members supporting said bridging joists, said bridglng oists being formed with recessed side faces and having vertical strengthening webs and. flanges adapted to support ceiling members, and reinforcing members positioned in said oists and extending through said webs. 5.. A building structure including oist members having recessed ends, reinforcing means incorporated in and extending longitudinally through said joists, said reinforcing means extending from the recessed ends of said joist members in the form of loops, means connecting the loops of the reinforcing members of adjacent joists, floor and ceiling members supported on said joists,

and means for connecting alined floor lIlBIIb bers.

6. In combination, a building construction, a plurality of joist members having undercut recesses providedin the side faces thereof and also with laterally extending flanges and vertical reinforcing webs .sep-- arating said recesses, the upper face .of each of said oist members being formed with a longitudinally extending, centrally positioned enlargement providinga seat and an;

abutment shoulder on each side thereof, a plurality of floor units supported on said seats, each floor unit having longitudinal reinforcing means extending therethrough With their ends exposed, and means to connect said exposed end of the adjacent alined floor units.

7. A building unit in the form of an elongated member substantially rectangular in cross-section, having a longitudinally ex tending enlargement on the top face thereof providing a flat seat on each side thereof, a longitudinally extending reenforcement positioned therein, the end of said unit being formed with a recess to expose part of said reenforcement in the form of a loop.

8. A building unit in the form of an elongated member rectangular in cross-section formed With a longitudinally extending enlargement providing a fiat seat on each side thereof, said unit also having a plurality of separate recesses formed in one side whereby a plurality of laterally extending flanges or shelves are formed near the bottom thereof.

9. A building unit in the form of an elongated member rectangular in cross-section formed With a longitudinally extend ing enlargement providing a flat seat on each side thereof, said unit also having a plurality of separate recesses formed in one side whereby aplurality of laterally extending flanges or shelves are formed near the bottom thereof, and a plurality of transverse reenforcements provided therein of substantial U-shape, having their ends turned laterally to reenforce said flanges or shelves.

10. In a building construction, a joist member having a plurality of pins provided at intervals along the top thereof, units supported by said joist and having loops exposed in the ends thereof adapted to receive said pins whereby the structure is connected together.

11. A building unit in the form of an elongated member having a plurality of separate recesses formed in one side thereof, said recesses being undercut and terminating short of the bottom thereof to provide a plurality of laterally extending flanges, said recesses being separated from each other by vertically extending Webs.

12. A building unit in the form of an elongated member having a plurality of separate recesses formed in one side thereof, said recesses being undercut and terminating short of the bottom thereof to provide a plurality of laterally extending flanges, said recesses being separated from each other by vertically extending Webs, and transverse reinforcements in said unit, certain of said reinforcements being arranged to have parts thereof extending Within said reinforcing Webs.

In testimony whereof I have hereunto set my hand in presence of tWo subscribing Witnesses.

FRANK R. HAHN. Witnesses:

Louis C. WALTERS, CARL GALAN'rBAoK. 

